Sophia Eddinger, 8, watches her father, Ryan Eddinger, clean a tray used in his hydroponic greenhouse system. The Eddinger family's Two Sisters Farm sells "living lettuce" to several area restaurants and grocers.

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Two Sisters Farm is the only commercial farm in the area specializing in hydroponics, or soilless growing, and their lettuce has been catching on around Lawrence and Johnson County since their first harvest this spring.